Update Gradle and buildtools #40

Merged bdonneaux merged 2 commits into DEVand:master from DEVand:devel_bear on 20 Nov 2018
2018-11-20
@Benoit Donneaux
[DP-118] Update Gradle wrapper and switch to bin only
Benoit Donneaux committed on 20 Nov 2018
@Benoit Donneaux
[DP-118] Update to same build tools as Dappre project
Benoit Donneaux committed on 20 Nov 2018